The influence of social support on COPD outcomes mediated by depression.

Turnier L, Eakin M, Woo H, Dransfield M, Parekh T, Krishnan JA, Kanner R, Cooper CB, Woodruff PG, Wise R, Han MK, Romero K, Paulin LM, Peters S, Drummond B, Bleecker ER, Bowler R, Comellas AP, Couper D, Paine R, Martinez F, Barr G, Putcha N, Hansel NN